Fix arch selection and test command

.github/workflows/python-package.yml

@@ -45,19 +45,11 @@ jobs:
           path: dist/*.tar.gz
 
   build-wheels:
-    name: Build Wheels for ${{ matrix.os }}-${{ matrix.arch }}
+    name: Build Wheels for ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
         os: [ macos-latest, windows-latest, ubuntu-latest ]
-        arch: [ x86_64 ]
-        include:
-          - arch: arm64
-            os: macos-latest
-          - arch: aarch64
-            os: ubuntu-latest
-            qemu: true
-
     steps:
       - uses: actions/checkout@v3
         with:
@@ -73,18 +65,19 @@ jobs:
       - name: Install QEMU
         # install QEMU if building for arm linux
         uses: docker/setup-qemu-action@v1
-        if: matrix.qemu
+        if: runner.os == 'Linux'
         with:
           platforms: arm64
 
       - name: Build wheels
         uses: pypa/cibuildwheel@v2.3.1
         env:
+          # these options are all specific to running in the CI. other options are in pyproject.toml
           MACOSX_DEPLOYMENT_TARGET: "10.15"
-#          CIBW_ARCHS_MACOS: ${{ matrix.arch }}
-#          CIBW_ARCHS_LINUX: ${{ matrix.arch }}
-#          CIBW_ARCHS_WINDOWS: "auto64"
-          CIBW_TEST_SKIP: "*-macosx_arm64"
+          CIBW_ARCHS_MACOS: "x86_64 universal2"
+          CIBW_ARCHS_LINUX: "x86_64 aarch64"
+          CIBW_ARCHS_WINDOWS: "auto64"
+          CIBW_TEST_SKIP: "*-macosx_arm64 *-macosx_universal2:arm64"
 
       - name: Upload Wheels
         uses: actions/upload-artifact@v2